Dear Raquel Melo and co-authors,

your manuscript entitled "Debris flow run-out simulation and analysis using a dynamic model" was reviewed by two independent referees. Overall, their comments are positive. However, one reviewer has highlighted some issues in the paper, with several comments and suggestions, which can be shared. On the other hand, your point by point replies were detailed and useful for improving your manuscript.

I agree with most comments posted by the anonymous referee #1, thus I believe that your work has potential and it is worth to publish it. I have decided that it has to undergo major revisions before being published. The reviewed manuscript will be briefly checked again by referees and editor before proceeding for publication.

In preparing the revised version of your work, please follow all the comments and suggestions made by the referee, and make them visible. Moreover, I would suggest conforming the paper to the subject of the special issue, by adding some comments, references, and details on possible application to landslide early warning systems (as you already introduced in your reply).

Finally, I suggest to check the similarity report of your paper in order to avoid similarities with previous works in the revised version of your manuscript.

Thank you.

Sincerely,
Stefano Luigi Gariano
NHESS Guest Editor

Dear Raquel Melo and co-authors,

I’ve read the last version of your manuscript and the positive feedback made by the reviewer.
I’m pleased to inform you that your paper is accepted for publication in NHESS journal.
However, I suggest few technical corrections regarding tables and figures, listed below.
After addressing these corrections, your manuscript will proceed to proofreading for the final publication in NHESS journal, in the selected Special Issue.

With my best regards and congratulations.

Sincerely,
Stefano Luigi Gariano


LIST OF TECHNICAL CORRECTIONS

Tables 2 and 3:
Please check the units of measurement.

Table 4:
I'm not sure that coulours can be used in tables.
I suggest adding another column indicating DF#1 and DF#2, instead of using colours.
Moreover, I suggest using entire names of the variables in the header of the table.
Please check the units of mesurements of "visc" and "max. vel.".

Table 6:
Please correct units of measurement for "excess rain" and "max. vel.".
I suggest using entire names of the variables in the header of the table.

Figures 10, 11, 12:
In the legends of thickness, please use brackets to separate classes, as done in figure 5.
As in the present version, a reader can not understand, as an example, if a point with a thickness equal to 0.5 m is included in the first or in the second class.
Alternatively, use a continuous legend.